☛ BUS topology: In this each computer is directly connected to primary network cable in a single line.

☷ Advantages: Inexpensive, easy to install, simple to understand, easy to extend.

☛ STAR topology: In this all computers are connected using a central hub.

☷ Advantages: Can be inexpensive, easy to install and reconfigure and easy to trouble shoot physical problems.

☛ RING topology: In this all computers are connected in loop.

☷ Advantages: All computers have equal access to network media, installation can be simple, and signal does not degrade as much as in other topologies because each computer regenerates it.